Add option for regexps in the transferlist search filter's context menu

src/base/preferences.cpp

@@ -1489,6 +1489,16 @@ void Preferences::setTransHeaderState(const QByteArray &state)
     setValue("TransferList/qt5/HeaderState", state);
 }
 
+bool Preferences::getRegexAsFilteringPattern() const
+{
+    return value("TransferList/UseRegexAsFilteringPattern", false).toBool();
+}
+
+void Preferences::setRegexAsFilteringPattern(const bool checked)
+{
+    setValue("TransferList/UseRegexAsFilteringPattern", checked);
+}
+
 // From old RssSettings class
 bool Preferences::isRSSWidgetEnabled() const
 {

src/base/preferences.h

@@ -350,6 +350,8 @@ public:
     void setTransSelFilter(const int &index);
     QByteArray getTransHeaderState() const;
     void setTransHeaderState(const QByteArray &state);
+    bool getRegexAsFilteringPattern() const;
+    void setRegexAsFilteringPattern(bool checked);
     int getToolbarTextPosition() const;
     void setToolbarTextPosition(const int position);
 

src/gui/mainwindow.cpp

@@ -232,9 +232,11 @@ MainWindow::MainWindow(QWidget *parent)
 
     // Name filter
     m_searchFilter = new LineEdit(this);
-    m_searchFilterAction = m_ui->toolBar->insertWidget(m_ui->actionLock, m_searchFilter);
     m_searchFilter->setPlaceholderText(tr("Filter torrent list..."));
     m_searchFilter->setFixedWidth(Utils::Gui::scaledSize(this, 200));
+    m_searchFilter->setContextMenuPolicy(Qt::CustomContextMenu);
+    connect(m_searchFilter, &QWidget::customContextMenuRequested, this, &MainWindow::showFilterContextMenu);
+    m_searchFilterAction = m_ui->toolBar->insertWidget(m_ui->actionLock, m_searchFilter);
 
     QWidget *spacer = new QWidget(this);
     spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
@@ -695,6 +697,23 @@ void MainWindow::displayRSSTab(bool enable)
     }
 }
 
+void MainWindow::showFilterContextMenu(const QPoint &)
+{
+    const Preferences *pref = Preferences::instance();
+
+    QMenu *menu = m_searchFilter->createStandardContextMenu();
+    menu->addSeparator();
+    QAction *useRegexAct = new QAction(tr("Use regular expressions"), menu);
+    useRegexAct->setCheckable(true);
+    useRegexAct->setChecked(pref->getRegexAsFilteringPattern());
+    menu->addAction(useRegexAct);
+
+    connect(useRegexAct, &QAction::toggled, pref, &Preferences::setRegexAsFilteringPattern);
+    connect(useRegexAct, &QAction::toggled, this, [this]() { m_transferListWidget->applyNameFilter(m_searchFilter->text()); });
+
+    menu->exec(QCursor::pos());
+}
+
 void MainWindow::displaySearchTab(bool enable)
 {
     Preferences::instance()->setSearchEnabled(enable);

src/gui/mainwindow.h

@@ -102,6 +102,7 @@ public:
     void showNotificationBaloon(QString title, QString msg) const;
 
 private slots:
+    void showFilterContextMenu(const QPoint &);
     void balloonClicked();
     void writeSettings();
     void readSettings();

src/gui/transferlistwidget.cpp

@@ -1188,7 +1188,9 @@ void TransferListWidget::applyTrackerFilter(const QStringList &hashes)
 
 void TransferListWidget::applyNameFilter(const QString &name)
 {
-    m_sortFilterModel->setFilterRegExp(QRegExp(name, Qt::CaseInsensitive, QRegExp::WildcardUnix));
+    const QRegExp::PatternSyntax patternSyntax = Preferences::instance()->getRegexAsFilteringPattern()
+                ? QRegExp::RegExp : QRegExp::WildcardUnix;
+    m_sortFilterModel->setFilterRegExp(QRegExp(name, Qt::CaseInsensitive, patternSyntax));
 }
 
 void TransferListWidget::applyStatusFilter(int f)